baber/WOPTO huggingface dataset:
Patent KR-20010025187-A (KR)
Title: Soon Dae a standard meterial creation be based manufacturing process.
Inventor: CHE YOUNG HWAN
IPC: A23L13/20
Filed: 2000-09-25
Abstract: PURPOSE: A process for making 'Sundae', which is a typical Korean food similar to sausage, according to the composition of standard materials is provided, thereby 'Sundae' having consistency of quality and taste can be produced. CONSTITUTION: The standard material composition ratio of 'Sundae' is 25% of pork, 16% of glutinous rice, 36% of vegetables, 8% of spices, and 15% of pig blood, in which the pig blood is used for binding other materials of Sundae. The standard material composition is inserted into a pig's small intestine to make 'Sundae' by using a device. The process for making 'Sundae' comprises the steps of: washing the pig's small intestine in the washing device by mixing the pig's small intestine, water, salt and wheat flour; inserting the standard material composition of 'Sundae' into the pig's small intestine using a pump at a rate of 180g/hunk; and cooking the pig's small intestine containing the standard material composition of 'Sundae' at 100 deg.C for 10 minutes and then heating at lower temperature for 15 minutes.
Patent KR-20010051607-A (KR)
Inventor: ASANO ISAMU
IPC: H01L21/768
Filed: 2000-11-10
Abstract: PURPOSE: To maintain high reliability of continuity between the upper electrode of a capacitor and a plug which is connected with an upper wiring layer to prevent defective connection of the upper electrode with the plug from being generated and to reduce the resistance of the upper electrode of the capacitor. CONSTITUTION: In a capacitor of a DRAM, constituted of lower electrodes 45 consisting of a ruthenium layer, a capacitor insulating film 50 consisting of a BST film and an upper electrode 49, the electrode 49 being constituted with a tungsten film 48 formed on the upper layer on an ruthenium film 47 which in turn is formed on the side of the film 50 is laminated on the film 47.
Patent KR-20020037143-A (KR)
Title: display for earth leakage circuit breaker
Inventor: HWANG SANG WON
IPC: H01H73/12
Filed: 2000-11-13
Abstract: PURPOSE: An electric leakage display apparatus is provided to simplify assembly procedures and structure of apparatus, while allowing users to easily recognize electric leakage. CONSTITUTION: An apparatus comprises a trip coil(42) where a current flows upon detection of an abnormal current; a fixed core(43) fixed to a yoke(41); an operating core(45) adsorbed into/released from the fixed core; an operating pin(46) fixed integrally with the operating core; a trip lever(47) for striking a cross bar in accordance with the movement of the operating pin; and a lever spring(48) for providing a single direction rotating force to the trip lever. The operating pin has an indicator lever(54) installed to be rotatable by a hinge(55), such that the indicator lever rotates during the movement of operating pin. The indicator lever has a display surface(54a) equipped with a leakage display plate(56) attached to the display surface. The display part of the leakage display plate is exposed to the display window of a breaker case in accordance with the rotation of the indicator lever.
Patent KR-20020037194-A (KR)
Title: Leakage inspection system and method of washing machine
Inventor: CHOI BYEONG GEOL
IPC: D06F33/02
Filed: 2000-11-13
Abstract: PURPOSE: A device for sensing water leakage of a washer and a method for controlling the device are provided to sense leakage of water stored in a wash tub and to prevent damage of components by interrupting power source when a water leakage amount exceeds a predetermined amount. CONSTITUTION: A device for sensing water leakage of a washer includes a water leakage sensing part(16), an alarm part(24), and a micom(20). The water leakage sensing part is mounted at right angles to a lower bottom surface of a cabinet inserted in a case in a straight movable manner and senses whether or not water leaks from a wash tub. The alarm part informs a user of the water leakage. The micom determines water leakage and water level according to voltage applied from the water leakage sensing part and operates the alarm part or a power switch(22).
Patent KR-20020037543-A (KR)
Title: Lower Electrode Cooling Mold of DC Electric Furnace
Inventor: CHOI SEON HO
IPC: F27B3/00
Filed: 2000-11-14
Abstract: PURPOSE: A lower electrode copper mold of a DC(direct current) electric furnace is provided to extend life times of a lower electrode and a sleeve refractory material of the lower electrode by installing the copper mold at a position where a billet is molten to cause damage of the sleeve refractory material. CONSTITUTION: In a lower electrode copper mold(2) of a DC electric furnace in which the lower electrode is consisted of billet, a sleeve refractory material(4) envelopes the outer side of the billet, and the copper mold is installed at the outer side of the lower part of the billet, the lower electrode copper mold(2) of the DC electric furnace is characterized in that a female grooved part having a certain elevation is formed upward along the circumference from a portion where the sleeve refractory material(4) is contacted with the copper mold, and a second copper mold(30) is installed at the female grooved part, wherein an installation position of the second copper mold(30) is a point which is 200 mm longitudinally distanced from the upper part of the copper mold, and which is 80 mm laterally distanced from a thickness of the sleeve refractory material(4).
Patent KR-20010008188-A (KR)
Inventor: MOON KOANG HO
Filed: 2000-11-10
Abstract: PURPOSE: A method for an internet generalized research and an advertisement service is provided so that anyone can present an opinion/suggestion through internet regardless of restrictions of time, money, region and person. CONSTITUTION: A method for an internet generalized research and an advertisement service comprises a generalized management system(100), a research requester(member)(200) and a common netizen(research participant)(300). A server of the generalized management system(100) comprises a central controlling device(110), RAM/ROM(120), an operation system(130), a data input system(140), a database storing device(150), a monitor(160) and a transmission network device(170). An existing server for central computer or a personal computer, which has storage space and process capability of large capacity, can be used as the server of the generalized management system(100). A hard disk, a CD-ROM, a magnetic disk device or a flash memory is used as the database storing device(150). The database storing device(150) includes several databases such as member information database(152), common netizen information database(154), and research information database(156). An existing input device such as keyboard and mouse is used as the data input system(140). The monitor(160) is driven by a monitor driving device connected to the central control device(110).
Patent KR-20020037797-A (KR)
Title: Color division device for liquid crystal display projector of single panel type
Inventor: EOM GI TAE
IPC: G02F1/13357
Filed: 2000-11-15
Abstract: PURPOSE: A color separator for a single-plate liquid crystal projector is provided to improve optical efficiency and to increase color fidelity. CONSTITUTION: A color separator for a single-plate liquid crystal projector includes a color wheel(3) and a total reflection mirror(1). The color wheel color-filters a light beam emitted from an optical source to extract only a beam of a specific color. The total reflection mirror is fixed at the light receiving side of the color wheel and reflects the incident ray reflected from the light receiving side of the color wheel. The total reflection mirror is fixed in parallel with the light receiving side of the color wheel. The color wheel is in non-axial rotary motion.
Patent KR-20020042985-A (KR)
Title: Circuit for Generating of Exponential Function
Inventor: KIM SEONG RYEOL
IPC: G06G7/28
Filed: 2000-12-01
Abstract: PURPOSE: An exponential function occurrence circuit is provided to obtain stable output signal by standard CMOS process. CONSTITUTION: The circuit consists of an electric current mirror part(31), the first linear amplifier part(32), the second linear amplifier part(33) and an accumulation part(34). The first linear amplifier generates the first electric current, which is proportioned to the control voltage. The second amplifier generates the second electric current, which is proportioned to the control voltage when the voltage is higher. The electric current mirror part generates the same electric currents as the first linear amplifier and the second linear amplifier. The accumulation part adds up the first electric current and the second electric current and generates amplifier control signal. The signal is the almost same as the exponential function.
Patent KR-20020046425-A (KR)
Title: a joint and slab juncture build method for bridge
Inventor: LEE PIL SIN
IPC: E01D19/06
Filed: 2000-12-14
Abstract: PURPOSE: A joint for bridge slabs and construction method thereof are provided to offer good cushioning effect and perfect water tightness to a joint formed in a juncture between slabs. CONSTITUTION: The joint for bridge slabs and construction method thereof comprise a step in which pavements on the juncture of slabs are cut to be eliminated, and then forming connecting recesses on them; a step in which a backup materials(20) having an elasticity and a thermal resistance is inserted and fastened in a space(11) formed between slabs; a step in which a sealing materials are filled in the space(11) and, the sealing materials are also applied on the inner surface of the connecting recesses to form a filling material layer(21); a step in which a metal plate is laid on the upper surface of the space(11) and, fixing nails(31) are then driven down to the back up materials through a metal plate; a step for forming a coating layer(40) in which the sealing materials are applied inside the connecting recesses while the metal plate being buried; a step for stacking grain layers and sealing layers in turn; a step for forming a coating layer(50) by applying the sealing materials to make the surface of a road level and; a step for sprinkling sands over the coating layer in order to prevent a slip.
Patent KR-20020049181-A (KR)
Title: A method for manufacturing ultra-high strength thick sheet with superior hardness and low temperature toughness
Inventor: JUN HYEONG JUN
IPC: C21D8/02
Filed: 2000-12-19
Abstract: PURPOSE: A method for manufacturing an ultra high tensile plate used to construct a structure requiring a bulletproof function is provided to endow the plate with good hardness as well as excellent low temperature toughness. CONSTITUTION: The method for manufacturing an ultra high tensile plate having excellent hardness as well as good low temperature toughness comprises the steps of; heating a steel slab composed of carbon of 0,1 to 0,2 percent by weight, silicon of 0.18 to 0.38 percent by weight, manganese of 0.50 to 0.80 percent by weight, phosphorus of 0.012 percent by weight and below, sulfur of 0.003 percent by weight and below, nickel of 3.75 to 4.25 percent by weight, chrome of 0.9 to 1.30 percent by weight, molybdenum of 0.45 to 0.60 percent by weight, niobium of 0.040 to 0.060 percent by weight, titanium of 0.005 to 0.040 percent by weight, soluble aluminium of 0.005 to 0.040 percent by weight, residual iron and other inevitable impurities at 1230 and 1300deg.C; rolling the steel slab; quenching it at 880 and 1000deg.C; and tempering it at 420 to 430deg.C.
Patent KR-20020049200-A (KR)
Inventor: LEE SEOK GYU
IPC: G11C7/10
Filed: 2000-12-19
Abstract: PURPOSE: An output driver circuit is provided, which drives an output voltage with several levels, by using an output driver as a driver of several resistors. CONSTITUTION: The first resistor driver part(10) comprises a resistor(R1) and the first pull-up transistor(MN11) connected in serial between a power supply voltage(Vterm) and an output pad(PAD), and the first pull-down transistor(MN12) and a resistor(R2) connected between the above output pad and a ground voltage(Vss). The second resistor driver part(20) comprises a resistor(R3) and the second pull-up transistor(MN13) connected in serial between the output pad and the ground voltage, and a resistor(R4) and the second pull-down transistor(MN14) connected in serial between the output pad and the ground voltage.
Patent KR-20020052040-A (KR)
Title: A Pail Pack
Inventor: BAE HYO YEONG
IPC: B23K35/00
Filed: 2000-12-23
Abstract: PURPOSE: A welding wire container is provided to allow an inner pipe, an outer pipe, a lower plate and an iron band to be easily assembled/disassembled by installing a fastening device at both ends of the iron band. CONSTITUTION: A welding wire container includes an outer pipe(110) and a lower plate member(120). A lid(150) is provided to cover the outer pipe(110). Upper and lower iron bands(10a,10b) are wound at upper and lower portions of the outer pipe(110). A flange(12a) extends to surround the upper iron band(10a) and a flange(12b) extends to surround the lower iron band(10b). A fastening device is provided at both ends of the upper and lower iron bands(10a,10b) so as to maintain an original shape of the outer pipe(110) and to couple the outer pipe(110) with the lower plate member(120). The outer pipe(110), the lower plate member(120) and the upper and lower iron plates(10a,10b) are easily assembled/disassembled by the fastening or releasing action of the fastening device.
Patent KR-20020052737-A (KR)
Title: Manufacturing process to improve the oxidation property of ferritic stainless steel bright annealing plates
Inventor: JUNG SANG YEOL
IPC: C21D1/74
Filed: 2000-12-26
Abstract: PURPOSE: A method for manufacturing ferritic stainless steel bright annealing plates is provided to improve oxidation resistance by controlling cooling rate after cold rolling process. CONSTITUTION: In an annealing method of a cold rolled steel sheet comprising C 0.1 wt.% or less, Cr 10 to 20 wt.%, Ni 1.0 wt.% or less, N 0.1 wt.% or less, Si 1.0 wt.% or less, Mn 2.0 wt.% or less, Ti 0.5 wt.% or less, Nb 0.6 wt.% or less, Mo 2.0 wt.% or less, Cu 1.0 wt.% or less, a balance of Fe and other inevitable impurities at 900 to 120 0°C in a reductive atmosphere of hydrogen and nitrogen, the present invention is characterized in that when cooling the cold rolled steel sheet from annealing temperature to 300°C, the cooling rate of the cold rolled steel sheet is controlled to 20-30°C/sec.
Patent KR-20020052811-A (KR)
Title: Method for recording the data on a optical disc using optimal writing power
Inventor: KIM GWAN UK
IPC: G11B19/02
Filed: 2000-12-26
Abstract: PURPOSE: An optimum recording method of an optical disc is provided to use a limited test data recording area of the optical disc, so as to promptly decide optimum recording optical power values corresponding to each recording speed and to optimize data recording. CONSTITUTION: If data recording is requested to a microcomputer(S10), the microcomputer confirms a write strategy, namely, a recording pulse and a target recording optical power value from a rotative optical disc(S11). The microcomputer records test data, while varying the confirmed recording optical power value and recording pulse(S12). If the recording of test data is completed(S20), the microcomputer decides each optimum recording optical power value corresponding to each recording speed from a reproduction feature of the recorded test data, for storage in a memory(S21). The microcomputer confirms an optimum recording optical power value corresponding to a current recording speed in the memory(S22). And the microcomputer controls an optical driver, to perform a recording operation using the confirmed optimum recording optical power value(S23).
Patent KR-20020052896-A (KR)
Title: Method of producing stainless steel sheet without surface defects
Inventor: KIM HUI SAN
IPC: B21B1/00
Filed: 2000-12-26
Abstract: PURPOSE: A method is provided to manufacture stainless steel sheet without surface defects by optimizing setting conditions such as unevenness reduction ratio according to thickness of steel types. CONSTITUTION: In a method for manufacturing a cold rolled strip comprising the processes of hot rolling a slab consisting certain constituents, annealing, pickling and cold rolling the hot rolled strip, dull roll rolling the annealed and pickled strip after annealing and pickling the cold rolled strip again, the method for rolling irregularities of high chromium stainless steel sheet is characterized in that the dull roll rolling process comprises the steps of processing the cold rolled strip by dull roll rolling the surface of rolls to a roll roughness different of 100 microns or lesson the basis of a cold rolled strip having a thickness of 2 mm in case that reduction ratio of the dull roll rolling is 5% or less; and annealing and pickling the dull roll rolled strip in a line speed of 15 to 18 m/min after dull roll rolling.
Patent KR-20010023092-A (KR)
Title: 질화갈륨계 화합물 반도체 장치
IPC: H01L21/205
Filed: 1998-08-12
Abstract: 격자 상수 또는 열 팽창 계수차에 의한 왜곡이 원인으로 되는 크랙이나 결함의 발생을 방지하여, 막 두께가 두꺼운 질화갈륨계 반도체층을 형성할 수 있는 질화갈륨계 화합물 반도체 장치이다.  n형 GaN막으로 이루어지는 콘택트층(4)과, n형 Al y Ga 1-y N막으로 이루어지는 클래드층(6) 사이에 n형 GaN막과 Al y Ga 1-y N막의 조성을 각각 갖는 크랙 방지 버퍼층(5)을 개재시킨다.
Patent KR-20010052064-A (KR)
IPC: E01F9/011
Filed: 1998-09-08
Abstract: The invention relates to a post (1), which is especially a hollow, tube-like piece and which is particularly intended for use as posts for traffic lights, street lights, signposts or similar, and which is formed of two layers. The inner layer (3) is of fibre-reinforced thermoset plastic and the outer layer (4) is of polyolefin plastic.
Patent KR-20010015602-A (KR)
IPC: G10K15/02
Filed: 1998-09-22
Abstract: The invention relates to an audio-player with an interchangeable data carrier for audio data. At least one micro-controller (8) with a connection to its own peripheral keyboard (10) is provided in the audio player. Said micro-controller (8) has a data connection to a decompression circuit (4) via the communication path (V0V1), and a data connection (V0V2) to an MM card (3). The MM card can be inserted into an insertion point (2) of the player (1), and has a data connection (V2V1) to the decompression circuit (4) whose output leads to a D/A converter (5). The output of the D/A converter (5) is connected to a reproduction unit (7). According to the method for controlling audio data, the audio data for the audio-player (1) are delivered by said audio-player (1) by means of interchangeable data carriers or via a serial interface (12). The delivered audio data are compressed, and then transported with a control operation of the micro-controller (8) of the audio-player (1) from a memory of a multimedia PC (11) into a flash memory of the MM card (3) where they are stored in the compressed state and/or the compressed audio-data are transported with a control operation of the microprocessor of the MM card (3) from the flash memory to a decompression circuit where they are then decompressed and are then passed on to a reproduction unit (7) via the D/A converter or the compressed audio data are transported from a memory of the multimedia PC (11) to the decompression circuit (4) where they are decompressed and then passed on the reproduction unit (7) via the D/A converter.
Patent KR-20010031796-A (KR)
Title: 낮은 변형온도를 갖는 변형가능 물질을 접착하기 위한방법 및 장치
IPC: C08J5/12
Filed: 1998-11-06
Abstract: 용매가 없고 경화 가능한 접착제를 통한 복수의 대상물을 접착하기 위한 시스템, 방법 및 장치가 제공된다. 적어도 하나의 대상물은 접착제의 반응 온도보다 낮은 변형 온도를 갖는다. 가공물은 그들 사이에 배치된 경화 가능한 접착제와 복수의 대상물에서 만들어 진다. 압력이 가공물에 제공되고, 가공물은 가변 주파수 마이크로파 에너지로 방사된다. 가공물은 각각의 변형온도 위에서 상기 대상물을 가열하지 않고 상기 접착제를 가열하도록 선택된 적어도 하나의 마이크로파 주파수 윈도우(window)로 스위핑(sweeping)된다.
Patent KR-20010032092-A (KR)
Title: 팽창성 식품 및 그 제조방법
IPC: A23L1/18
Filed: 1998-11-11
Abstract: 전분질 재료를 함유하는 팽창성 반제품이 기술되며, 여기서 상기 가루 재료의 전분 분자들은 일방향으로 정렬되고 마이크로파 방사에 노출시에 무질서하게 정렬된 전분 분자들의 매트릭스를 형성하여 마이크로파 처리되지 않은 반제품의 크기의 2배 이상의 크기를 갖는 부풀린 반제품을 형성한다.  이러한 제품을 제조하는 방법이 또한 기술된다.
Patent KR-20010024634-A (KR)
IPC: F27D11/08
Filed: 1998-11-06
Abstract: A smelting furnace system for smelting metals, especially steel scrap, with a lower furnace vessel, in the bottom of which a tap hole is provided, and with an upper furnace vessel, which can be closed by a cover, in which a central pipe is provided coaxially with respect to the main axis of the furnace, in which pipe at least one electrode is arranged, and on which pipe there is provided a component which encompasses the upper furnace vessel and can be connected to a gas offtake device. In this arrangement, a slit is provided in the wall of the central pipe in a longitudinal direction. A sleeve is fastened at the edge of the slit, allowing the central pipe to be fastened to the casing of the upper furnace vessel having a corresponding slit. Furthermore, a supporting arm, which is connected to a supporting pillar arranged outside the furnace, can be led through the hollow space of the sleeve into the central pipe, with at least one electrode fastened on the front face of this arm.
Patent KR-20010041619-A (KR)
Title: 진공처리장치
IPC: C23C16/46
Filed: 1999-03-05
Abstract: 진공처리장치는, 피처리체(웨이퍼)(1)를 얹어 두는 얹어 놓는 대(22)를 내부에 갖는 진공처리용기(16)를 구비하고 있다.  피처리체(W)의 둘레가장자리부를 위쪽에서 눌러 피처리체(W)를 얹어 놓는 대(22) 위에 고정하기 위한 누름 부재(클램프 링)(38)와, 얹어 놓는 대(22)에 대향한 샤워헤드부(74)가 설치되어 있다.  샤워헤드부(74)는, 아랫면에 다수의 가스분사구멍(80,80A)이 형성되어 있다.  이 샤워헤드부(74)의 아랫면은, 누름 부재(38)에 대향하는 대향부분과 그 이외의 비대향부분으로 나누어진 경우에 있어서, 비대향부분의 단위면적당의 가스분사량이 대략 균일해지고, 대향부분의 단위면적당의 가스분사량이 비대향부분보다도 많아지도록 구성되어 있다.  이러한 구성은, 예컨대 가스분사구멍(80,80A)의 직경을 달리 함으로써 달성된다.
Patent KR-20010042435-A (KR)
Title: 인간조직인자(티에프)에 대한 인간형화항체 및인간형화항체의 제조방법
IPC: C12N15/13
Filed: 1999-04-02
Abstract: A. (1) 조직인자(TF)에 대한 마우스 모노클로날항체의 H쇄CDR와 인간항체의 H쇄FR를 함유해서 되는 H쇄V영역, 및 (2) 인간항체 H쇄C영역을 함유해서 되는 인간형화 H쇄: 및 
     B. (1)TF에 대한 마우스 모노클로날항체의 L쇄CDR와 인간항체의 L쇄FR를 함유해서 되는 L쇄V영역, 및 (2) 인간항체 L쇄C영역을 함유해서 되는 인간형화 L쇄를 함유해서 이루어지는, TF에 대한 인간형화항체. 
     인간항체에 마우스 모노클로날항체의 CDR를 그라프트해서 인간형화 V영역을 제작한 후, 이 FR를 상동성이 높은 다른 인간항체의 대응하는 FR로 치환해서 활성이 높은 인간형화항체를 탐색한다
Patent KR-20010043929-A (KR)
Title: 송신 장치, 수신 장치 및 송수신 방법
IPC: H04B7/06
Filed: 2000-03-28
Abstract: 송신 장치(100)에 있어서, 오류 정정 부호화부(101)에서 송신 데이터를 오류 정정 부호화하고, 인터리빙부(l02)에서 인터리빙 처리하고, 변조부(103)에서 변조하여 복수로 분기한다.  승산부(106, 107)에서, 그 분기된 각 신호에 시변 계수 발생부(104, 105)로부터의 시간적으로 변화하는 각각 다른 시변 계수를 승산하여, 이 승산 후의 각 신호를 복수의 안테나(108, 109)로부터 송신한다.  이것에 의해, 장치 전체의 대형화 및 소비 전력의 증대를 초래하지 않도록, 저속 페이딩에서의 상황이나 한정된 인터리빙 길이에서 소망하는 오류 정정 능력을 보증할 수 있어, 송신 전환 다이버시티가 갖는 과제를 극복할 수 있다.
Patent KR-20010071413-A (KR)
Inventor: KOHL PAUL A
IPC: H01L21/762
Filed: 1999-06-04
Abstract: A method of forming a porous insulating composition comprising the steps of (A) providing at least one organic sacrificial material/dielectric material composition comprising at least one organic sacrificial material and at least one dielectric material; and (B) removing the at least one organic sacrificial material in the at least one organic sacrificial material/dielectric material composition, in order to generate pores in the at least one dielectric material. Also disclosed is a composition useful in making a porous insulator, comprising a heat-activated, pore-forming, sacrificial material; and a dielectric material. Alternatively, the composition useful in making a porous insulator, comprises at least one pore-forming, organic sacrificial material; ant at least one dielectric material, wherein the at least one pore- forming, material is a norbornene-type polymer.
Patent KR-20010071668-A (KR)
Title: 전기전도성 반사방지막이 부착된 유리 물품 및 이를사용한 음극선관
IPC: H01J29/88
Filed: 1999-06-29
Abstract: 본 발명은 금속막, 굴절률 2.O 내지 2.4의 고굴절률 투명 유전체막 및 굴절률 1.35 내지 1.46의 저굴절률 투명 유전체막이 550nm 파장에서의 굴절률이 1.4 내지 1.7인 유리 기본체 위에 당해 유리 기본체측으로부터 차례로 적층된 전기전도성 반사방지막이 피복된 유리 물품으로서, 당해 금속막을 니켈/철 합금 막으로 하고 가시광선 반사율을 1% 이하로 하는, 전기전도성 반사방지막이 부착된 유리 물품에 관한 것이다.  전기전도성 반사방지막의 광학 특성 및 전기 저항 특성은 열적으로 안정적이므로, 훤넬(funnel)과 프릿 유리로 가열 접합해도 가열 접합전의 성능을 유지할 수 있으며 광학 특성과 대전방지 기능을 손상하지 않고 음극선관을 제조할 수 있다.